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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 953 · 40 questions
TalentJR

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

NameDateTime takenScore ___ / 40
  1. 1.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  2. 2.A town has 3120 people. Its population grows by 15%. How many people live there now?
  3. 3.The price of a bicycle is ₹4320. It goes up by 40%. What is the new price (in ₹)?
  4. 4.A water tank holds 4540 litres. 15% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹4660. It goes up by 25%. What is the new price (in ₹)?
  6. 6.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  7. 7.A shop sells 240 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  8. 8.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  9. 9.The price of a school bag changes from ₹4760 to ₹3332. By what percent did it come down?
  10. 10.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹4820. It goes up by 25%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹3040. It goes up by 25%. What is the new price (in ₹)?
  13. 13.The price of a bicycle is ₹380. It goes up by 30%. What is the new price (in ₹)?
  14. 14.The price of a bicycle is ₹2340. It goes up by 30%. What is the new price (in ₹)?
  15. 15.A water tank holds 700 litres. 30% of the water is used. How many litres are left?
  16. 16.A water tank holds 80 litres. 40% of the water is used. How many litres are left?
  17. 17.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  18. 18.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹2580 to ₹3096. By what percent did it go up?
  22. 22.The price of a bicycle is ₹1480. It goes up by 20%. What is the new price (in ₹)?
  23. 23.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.A town has 980 people. Its population grows by 20%. How many people live there now?
  25. 25.A shop sells 4080 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  26. 26.A water tank holds 5000 litres. 40% of the water is used. How many litres are left?
  27. 27.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  28. 28.A shop sells 640 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.A shop sells 1400 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  30. 30.A town has 4220 people. Its population grows by 5%. How many people live there now?
  31. 31.The price of a bicycle is ₹1500. It goes up by 20%. What is the new price (in ₹)?
  32. 32.A water tank holds 2480 litres. 5% of the water is used. How many litres are left?
  33. 33.A town has 620 people. Its population grows by 20%. How many people live there now?
  34. 34.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  35. 35.A shop sells 4160 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  36. 36.A water tank holds 900 litres. 25% of the water is used. How many litres are left?
  37. 37.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  38. 38.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  39. 39.A town has 2040 people. Its population grows by 40%. How many people live there now?
  40. 40.A water tank holds 1500 litres. 10% of the water is used. How many litres are left?

Answer key

  1. 36.5
  2. 3588
  3. 6048
  4. 3859
  5. 5825
  6. 32
  7. 336
  8. 54
  9. 30
  10. 75
  11. 6025
  12. 3800
  13. 494
  14. 3042
  15. 490
  16. 48
  17. 14.5
  18. 95
  19. 110
  20. 72.5
  21. 20
  22. 1776
  23. 40.5
  24. 1176
  25. 5304
  26. 3000
  27. 15.5
  28. 704
  29. 1820
  30. 4431
  31. 1800
  32. 2356
  33. 744
  34. 96
  35. 4992
  36. 675
  37. 56
  38. 47
  39. 2856
  40. 1350

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